The third group had its 12 hours of light advanced by six hours once a week, mimicking eastbound travel.
第三组的白昼时间则为每周提前6小时,以模拟向东旅行后造成的时差。
eastbound:向东旅行的
eastbound 往东的 | eastbound 向东旅行的 | easterling 东方国家的人